<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form
            layout="inline"
            :model="param"
        >
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="名称">
              <template #prefix><UserOutlined style="color: rgba(0, 0, 0, 0.25)" /></template>
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({page:1,size:pagination.pageSize})" size="large">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()" size="large">
              新增
            </a-button>
          </a-form-item>
        </a-form>
      </p>
      <a-table
        :columns="columns"
        :row-key="record => record.id"
        :data-source="ebooks"
        :pagination="pagination"
        :loading="loading"
        @change="handleTableChange"
      >
      <template #cover="{text:cover}" >
        <img v-if="cover" :src="cover" alt="avatar"/>
      </template>
      <template v-slot:category="{ text, record }">
        <span>{{ getCategoryName(record.category1Id) }}/{{ getCategoryName(record.category2Id) }}</span>
      </template>
      <template v-slot:action="{text, record }">
        <a-space size="small">
          <router-link :to="'/admin/doc?ebookId='+record.id">
          <a-button type="primary" >
            文档管理
          </a-button>
          </router-link>
          <a-button type="primary" @click="edit(record)">
            编辑
          </a-button>
          <a-popconfirm
              title="删除后不可恢复，确认删除？"
              ok-text="是"
              cancel-text="否"
              @confirm="handleDelete(record.id)"
          >
            <a-button danger  @click="handleDelete(record.id)">
              删除
            </a-button>
          </a-popconfirm>
        </a-space>
      </template>
      </a-table>
    </a-layout-content>
  </a-layout>
  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{ span: 6}" :wrapper-col="{ span: 18 }">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
            v-model:value="categoryIds"
            :field-names="{ label: 'name', value: 'id', children: 'children' }"
            :options="level1"
        />
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea"/>
      </a-form-item>
    </a-form>
  </a-modal>
</template>
<script lang="ts">
import { defineComponent,onMounted,ref} from 'vue';
import { message } from 'ant-design-vue';
import axios from 'axios';
import {Tool} from "@/util/tool";

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value = {};
    const ebooks = ref();
    const pagination = ref({
      current:1,
      pageSize:10,
      total:0
    });
    const loading = ref(false);
    const columns= [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: { customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name',
      },
      {
        title: '分类',
        slots: { customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount'
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount'
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount'
      },
      {
        title: 'Action',
        key: 'action',
        slots: { customRender: 'action'}
      },

    ]
    /**
     * 数据查询
     */
    const handleQuery = (params: any) => {
      loading.value = true;
      axios.get("ebook/list",{
        params: {
          page: params.page,
          size: params.size,
          name: param.value.name
        }
      }).then((response)=>{

        loading.value = false;
        const data = response.data;
        if (data.success) {
          ebooks.value = data.content.list;
          //重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        } else {
          message.error(data.message)
        }
      });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("看看自带的分页参数有哪些："+pagination);
      handleQuery({
        page:pagination.current,
        size:pagination.pageSize
      });
    };

    // -------- 表单 ---------
    /**
     * 数组，[100, 101]对应：前端开发 / Vue
     */
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOk = () => {
      modalLoading.value = true;

      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      axios.post("ebook/save",ebook.value).then((response)=>{
        modalLoading.value = false;
        const data = response.data;  //data = commonResp
        if(data.success) {
          modalVisible.value = false;

          //重新加载列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 编辑
     */
    const edit = (record: any) => {
      modalVisible.value = true;
      ebook.value = Tool.copy(record);
      categoryIds.value = [ ebook.value.category1Id, ebook.value.category2Id ];
      console.log("categoryIds.value:"+categoryIds.value);
    };
    /**
     * 新增
     */
    const add = () => {
      modalVisible.value = true;
      ebook.value = {};
    };
    /**
     * 删除
     */
    const handleDelete = (id: number) => {
      console.log('id为：'+id)
      axios.delete("ebook/delete/"+ id).then((response) => {
        const data = response.data;  //data = commonResp
        if(data.success) {
          //重新加载列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        }else{
          message.error(data.message);
        }
      });
    };

    const level1 = ref();
    let categorys: any;
    /**
     * 查询所有分类
     */
    const handleQueryCategory = () => {
      loading.value = true;
      axios.get("category/all",).then((response)=>{
        loading.value = false;
        const data = response.data;
        if (data.success) {
          categorys = data.content;
          console.log("原始数组:",categorys);

          level1.value = [];
          level1.value = Tool.array2Tree(categorys,0)
          console.log("树形结构：",level1.value);

          // 加载完分类后，再加载电子书，否则如果分类树加载很慢，则电子书渲染会报错
          handleQuery({
            page: 1,
            size: pagination.value.pageSize
          });
        } else {
          message.error(data.message)
        }
      });
    };

    const getCategoryName = (cid: any) => {
      //console.log(cid);
      let result= "";
      categorys.forEach((item: any) =>{
        //注意使用 ==  不能使用===
        if (item.id == cid){
          result = item.name;
        }
      });
      return result;
    }

    onMounted(()=>{
      handleQueryCategory();
    });

    return{
      param,
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      getCategoryName,

      edit,
      add,
      handleDelete,
      handleQuery,

      ebook,
      modalVisible,
      modalLoading,
      handleModalOk,
      categoryIds,
      level1,
    }
  }
});
</script>
